diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/uart/app_uart.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/uart/app_uart.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/uart/app_uart.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/uart/app_uart.c new file mode 100644 index 0000000..a5dd337 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/uart/app_uart.c @@ -0,0 +1,160 @@ +/** + * Copyright (c) 2015 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#include "sdk_common.h" +#if NRF_MODULE_ENABLED(APP_UART) +#include "app_uart.h" +#include "nrf_drv_uart.h" +#include "nrf_assert.h" + +static uint8_t tx_buffer[1]; +static uint8_t rx_buffer[1]; +static volatile bool rx_done; +static app_uart_event_handler_t m_event_handler; /**< Event handler function. */ +static nrf_drv_uart_t app_uart_inst = NRF_DRV_UART_INSTANCE(APP_UART_DRIVER_INSTANCE); + +static void uart_event_handler(nrf_drv_uart_event_t * p_event, void* p_context) +{ + if (p_event->type == NRF_DRV_UART_EVT_RX_DONE) + { + app_uart_evt_t app_uart_event; + app_uart_event.evt_type = APP_UART_DATA; + app_uart_event.data.value = p_event->data.rxtx.p_data[0]; + (void)nrf_drv_uart_rx(&app_uart_inst, rx_buffer, 1); + rx_done = true; + m_event_handler(&app_uart_event); + } + else if (p_event->type == NRF_DRV_UART_EVT_ERROR) + { + app_uart_evt_t app_uart_event; + app_uart_event.evt_type = APP_UART_COMMUNICATION_ERROR; + app_uart_event.data.error_communication = p_event->data.error.error_mask; + (void)nrf_drv_uart_rx(&app_uart_inst, rx_buffer, 1); + m_event_handler(&app_uart_event); + } + else if (p_event->type == NRF_DRV_UART_EVT_TX_DONE) + { + // Last byte from FIFO transmitted, notify the application. + // Notify that new data is available if this was first byte put in the buffer. + app_uart_evt_t app_uart_event; + app_uart_event.evt_type = APP_UART_TX_EMPTY; + m_event_handler(&app_uart_event); + } +} + +uint32_t app_uart_init(const app_uart_comm_params_t * p_comm_params, + app_uart_buffers_t * p_buffers, + app_uart_event_handler_t event_handler, + app_irq_priority_t irq_priority) +{ + nrf_drv_uart_config_t config = NRF_DRV_UART_DEFAULT_CONFIG; + config.baudrate = (nrf_uart_baudrate_t)p_comm_params->baud_rate; + config.hwfc = (p_comm_params->flow_control == APP_UART_FLOW_CONTROL_DISABLED) ? + NRF_UART_HWFC_DISABLED : NRF_UART_HWFC_ENABLED; + config.interrupt_priority = irq_priority; + config.parity = p_comm_params->use_parity ? NRF_UART_PARITY_INCLUDED : NRF_UART_PARITY_EXCLUDED; + config.pselcts = p_comm_params->cts_pin_no; + config.pselrts = p_comm_params->rts_pin_no; + config.pselrxd = p_comm_params->rx_pin_no; + config.pseltxd = p_comm_params->tx_pin_no; + + m_event_handler = event_handler; + + rx_done = false; + + uint32_t err_code = nrf_drv_uart_init(&app_uart_inst, &config, uart_event_handler); + VERIFY_SUCCESS(err_code); + + // Turn on receiver if RX pin is connected + if (p_comm_params->rx_pin_no != UART_PIN_DISCONNECTED) + { + return nrf_drv_uart_rx(&app_uart_inst, rx_buffer,1); + } + else + { + return NRF_SUCCESS; + } +} + + +uint32_t app_uart_get(uint8_t * p_byte) +{ + ASSERT(p_byte); + uint32_t err_code = NRF_SUCCESS; + if (rx_done) + { + *p_byte = rx_buffer[0]; + rx_done = false; + } + else + { + err_code = NRF_ERROR_NOT_FOUND; + } + return err_code; +} + +uint32_t app_uart_put(uint8_t byte) +{ + tx_buffer[0] = byte; + ret_code_t ret = nrf_drv_uart_tx(&app_uart_inst, tx_buffer, 1); + if (NRF_ERROR_BUSY == ret) + { + return NRF_ERROR_NO_MEM; + } + else if (ret != NRF_SUCCESS) + { + return NRF_ERROR_INTERNAL; + } + else + { + return NRF_SUCCESS; + } +} + +uint32_t app_uart_flush(void) +{ + return NRF_SUCCESS; +} + +uint32_t app_uart_close(void) +{ + nrf_drv_uart_uninit(&app_uart_inst); + return NRF_SUCCESS; +} +#endif //NRF_MODULE_ENABLED(APP_UART) |